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Copyright>
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Chd|====================================================================
Chd|  PEVECI                        source/elements/beam/peveci.F 
Chd|-- called by -----------
Chd|        PINIT3                        source/elements/beam/pinit3.F 
Chd|-- calls ---------------
Chd|====================================================================
      SUBROUTINE PEVECI(RLOC, X1,X3, Y1,Y3, Z1,Z3,X2,Y2,Z2,NC2,NC3) 
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
#include      "mvsiz_p.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER , DIMENSION(MVSIZ), INTENT(IN) :: NC2,NC3
      my_real , DIMENSION(MVSIZ), INTENT(IN) :: X2,Y2,Z2
C     REAL
      my_real
     .   RLOC(3,*),
     .   X1(MVSIZ), X3(MVSIZ), 
     .   Y1(MVSIZ), Y3(MVSIZ),
     .   Z1(MVSIZ), Z3(MVSIZ), 
     .   E2X(MVSIZ), E2Y(MVSIZ), E2Z(MVSIZ)
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "vect01_c.inc"
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
      my_real
     .   SUM,E1X,E1Y,E1Z
C---------------------------------------------------------------------
      DO I=LFT,LLT
        IF (NC3(I)==NC2(I)) THEN
          E1X=X2(I)-X1(I)
          E1Y=Y2(I)-Y1(I)
          E1Z=Z2(I)-Z1(I)
          SUM = E1X*E1X + E1Z*E1Z
          IF (SUM < EM20) THEN
            E2X(I)=ZERO
            E2Y(I)=ZERO
            E2Z(I)=ONE
          ELSE
            E2X(I)=ZERO
            E2Y(I)=ONE
            E2Z(I)=ZERO
          END IF
        ELSE
          E2X(I)=X3(I)-X1(I)
          E2Y(I)=Y3(I)-Y1(I)
          E2Z(I)=Z3(I)-Z1(I)
C         ERROR MESSAGE IN PCOORI
          IF (SQRT(E2X(I)**2 + E2Y(I)**2 + E2Z(I)**2) < EM20) RETURN
        END IF
      ENDDO
C
      DO I=LFT,LLT
        IF (NC3(I)==NC2(I)) CYCLE
        SUM   =SQRT(E2X(I)*E2X(I)+E2Y(I)*E2Y(I)+E2Z(I)*E2Z(I))
        E2X(I)=E2X(I)/SUM
        E2Y(I)=E2Y(I)/SUM
        E2Z(I)=E2Z(I)/SUM
      ENDDO
C
      DO I=LFT,LLT
        RLOC(1,I)=E2X(I)
        RLOC(2,I)=E2Y(I)
        RLOC(3,I)=E2Z(I)
      ENDDO
C-----------
      RETURN
      END
